“Hydrogen peroxide and carbamide peroxide are typically ... Lipari often reaches for this one from Colgate to brush morning and night. “I typically recommend Colgate Optic White, since I ...

The kit comes with a whitening pen filled with hydrogen peroxide gel that you brush over your teeth before using the light.

Colgate says that all toothpastes are graded ... the likely culprit is the peroxide that acts as the main ingredient to help bleach the tooth's surface. 'The peroxide can irritate the tooth's ...